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[zhangjialong <luoyan_cn@xxxxxxxxxxx>]

Public bug reported:

Description
===========
When using host-evacuate command, some vms on failed host would be failed when evacuating because
the vif-plug event was be sent to failed node not the node which vm launched on.

Steps to reproduce
==================
1.create 8 vms on host1

2.nova service-force-down host1 nova-compute
  nova service-force-down host1 nova-conductor
  nova service-force-down host1 nova-scheduler

3.evacuate the vms on host1
  nova  host-evacuate host1

Expected result
===============
After the execution of the steps above, all of vms on hosts1 should be evacuated to other hosts


Actual result
=============
only 2-3 vms can be evacuated, others became to failed

Environment
===========
1. My openstack version is mitaka

2. Use Libvirt + Kvm in OpenStack

2. Use Ceph as backend storage

3. Use Neutron with OpenVSwitch

** Affects: nova
     Importance: Undecided
     Assignee: zhangjialong (zhangjl)
         Status: New

** Summary changed:

- Vif-plug event was be sent to old node cause evacuate failed
+ Vif-plug event was been sent to old node cause evacuate failed

** Changed in: nova
     Assignee: (unassigned) => zhangjialong (zhangjl)

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https://bugs.launchpad.net/bugs/1612891

Title:
  Vif-plug event was been sent to old node cause evacuate failed

Status in OpenStack Compute (nova):
  New

Bug description:
  Description
  ===========
  When using host-evacuate command, some vms on failed host would be failed when evacuating because
  the vif-plug event was be sent to failed node not the node which vm launched on.

  Steps to reproduce
  ==================
  1.create 8 vms on host1

  2.nova service-force-down host1 nova-compute
    nova service-force-down host1 nova-conductor
    nova service-force-down host1 nova-scheduler

  3.evacuate the vms on host1
    nova  host-evacuate host1

  Expected result
  ===============
  After the execution of the steps above, all of vms on hosts1 should be evacuated to other hosts

  
  Actual result
  =============
  only 2-3 vms can be evacuated, others became to failed

  Environment
  ===========
  1. My openstack version is mitaka

  2. Use Libvirt + Kvm in OpenStack

  2. Use Ceph as backend storage

  3. Use Neutron with OpenVSwitch

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